// Bonus for rook on an open or semi-open file
if (pos.is_on_semiopen_file(Us, s))
- score += RookOnFile[bool(pos.is_on_semiopen_file(Them, s))];
+ score += RookOnFile[pos.is_on_semiopen_file(Them, s)];
// Penalty when trapped by the king, even more if the king cannot castle
else if (mob <= 3)
|| (pos.pieces(PAWN) & (s + Up)))
bonus = bonus / 2;
- score += bonus - PassedFile * std::min(f, ~f);
+ score += bonus - PassedFile * map_to_queenside(f);
}
if (T)
&& pos.non_pawn_material() == 2 * BishopValueMg)
sf = 16 + 4 * pe->passed_count();
else
- sf = std::min(40 + (pos.opposite_bishops() ? 2 : 7) * pos.count<PAWN>(strongSide), sf);
+ sf = std::min(sf, 36 + (pos.opposite_bishops() ? 2 : 7) * pos.count<PAWN>(strongSide));
+ sf = std::max(0, sf - (pos.rule50_count() - 12) / 4 );
}
return ScaleFactor(sf);